8e79bf6adf
- Add support for adding the base folder to PATH. - Only display one pop up window at a time in order to avoid confusion. - Add automatic updates feature: - Windows and Linux versions will be shipped with an updater program used to update both Artemis and the updater itself. - MacOs versions will not have the updater. Instead the user will be asked to download the new software version (if present) via browser.
112 lines
3.2 KiB
Python
112 lines
3.2 KiB
Python
from io import BytesIO
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import json
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from constants import Constants
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from os_utilities import get_os
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from web_utilities import download_file
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"""This module exposes just one class: VersionController.
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All the relevant information can be accessed with the dot notation on an instance of such class, e.g.:
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version_controller.software.hash_code
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is the hash_code of the latest release of the software running on the current OS."""
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def _download_versions_file():
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"""Download the json file containing all the information
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about the latest version of the software. Return a dictionary
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containing only the information for the running OS.
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Return a dictionary from a json with the following structure:
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{
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"windows": {
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"software": {
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"version": "...",
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"url": "...",
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"hash_code": "...",
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"size": ...
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},
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"updater": {
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"version": "...",
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"url": "...",
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"hash_code": "...",
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"size": ...
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}
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},
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"linux": {
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"software": {
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"version": "...",
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"url": "...",
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"hash_code": "...",
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"size": ...
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},
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"updater": {
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"version": "...",
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"url": "...",
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"hash_code": "...",
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"size": ...
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}
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},
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"mac": {
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"software": {
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"version": "...",
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"url": "...",
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"hash_code": "...",
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"size": ...
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},
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"updater": {
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"version": "...",
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"url": "...",
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"hash_code": "...",
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"size": ...
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}
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}
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}
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"""
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try:
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version_dict = json.load(
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BytesIO(download_file(Constants.VERSION_LINK))
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)[get_os()]
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except Exception:
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return None
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else:
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return version_dict
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class VersionController:
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"""Dynamically create attributes corresponding to elements of a dictionary.
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Used to get updates information."""
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def __init__(self, dct=None):
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"""Initialize the dictionary"""
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super().__init__()
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self._dct = dct
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def __getattr__(self, attr):
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"""Override super().__getattr__. Dynamically create new attributes
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corresponding to elements of the diciotnary."""
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if self._dct is None:
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if not self.update():
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return None
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try:
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dct_element = self._dct[attr]
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except Exception("ERROR: Invalid attribute!"):
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return None
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else:
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if isinstance(dct_element, dict):
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setattr(self, attr, type(self)(dct_element))
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else:
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setattr(self, attr, dct_element)
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return getattr(self, attr)
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def update(self):
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"""Reset the dictionary to the correspondig json file containing
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the latest version information. Call this function inside a Qthread."""
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dct = _download_versions_file()
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if dct is not None:
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self._dct = dct
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return True
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else:
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return False
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